Volatile Times in Vapor Intrusion Regulation: A Legal and Technical Update
Vapor Intrusion: New Rules by the EPA
On February 23, 2023, California EPA (Cal EPA) finally released a “final draft” version of the much-awaited vapor intrusion guidance, Final Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion (VI Guidance)...more
This summer, EPA issued two, long-awaited final technical guides for assessing and mitigating the intrusion of hazardous vapors from subsurface contamination into overlying buildings. EPA’s issuance of these technical guides...more
The cumulative impact of the EPA guidance is to require the generation of more data, which means more sampling and analysis, more frequent and stringent remediation, and potentially higher remediation costs. At long...more